Map and chart exhibitor



(No mm A. DOM.

MAP AND CHART EXHIBITOR.

No. 257,671. Patented May 9, 1882. Q

. maps, charts, show cards, or other display UNITED STATES PATENTOFFICE.

ALEXANDER DOM, OF MOUNT HEALTHY, OHIO.

' MAP AND CHART EXHIBITOR.

SPECIFICATION formingpart of Iletters Patent No.'257,671, dated May9,1882.

Application filed October18, 1881. (No model.)

Ohio, have invented certain new and useful lmprovements in Map and ChartExhibitors, of which the following is a specification.

The object of my invention is to provides a convenient and cheap devicefor displaying sheetsfor use in schools or libraries. .It is es peeiallyapplicable to displaying alphabetical and primary charts and small mapsfor prim'ary schools, but is not confined in its usefulness to thisclass of display-sheets.

Referring to thedrawings making part of this specification, Figure Us aperspective view of my invention. Fig. 2 is a perspective view of adetached portion. Fig. 3 is an enlarged central veftical section of theupper portion,taken at right angles to the roller. Figs. 4 and 5represent modifications of my invention.

A is the standard, suitably upheld. In the present instance it restsupon three or more legs, (1. Upon the top of this standard is supportedthe frame A. This frame consists of the horizontal rail B and the armsB. The rail B is provided atits center with the pin b, which, when theparts are all in position, enters a hole, I), in the top of the standardA, as shown in Fig. 3. This hole bissufficiently large to allow thepin 1) to turn freely therein, so that the frame A, to which the pin bis attached, may be caused to revolve on top of the standard, the pin 1)extending far enough into the top of the standard A to give a firmsupport to the frame A". A rail, 0, is fixed to or suitably journaled inthe arms B. The preferable form of said rail is that of a roller, asshown, and the preferable mode of connecting it to the standard is asfollows: The top ends of the arms B are providedwith notches d, in whichrests the axis of the roller G. If preferred, only one of the arms Bneed be provided with a notch,the other arm having a hole into which oneendof the axis of the roller Gis placed,the purpose of these notchesbeing to allow of a ready removal and insertion of the roller into theframe A. Around the roller 0, at intervals, are attached the mapsorcharts I], as shown in Fig. 3. Astrip l' of muslin, X, or other strongcloth is attached .to each sheet along its upper edge, and it is by thisstrip that each sheet is attached to the roller or rail, thus preventingthe tearing of the sheets as they are handled. These maps or charts arepreferably printed on both sides to economize space, and theconstruction ofthe frame A and standard A is such as to permit of theready inspection of either side,

it only being necessary'to revolvethe frame A one-half around. 1

' To give a better understanding ofmy invcn-.

side of the sheet bearing lesson five,this sheet is thrown over to theother side of the frame and the frame turned one-half around, which willbring lesson six to the position now occupiedby lesson five, and byturning the frame back again lesson seven will be visible, ithaving beenuncovered when the sheet bearing lessons five and six was thrown overthe frame. In this manner any desired lesson. may be broughtinto view,the roller 0, as the various sheets are thrown over, turning slightly,so that the outside. sheets always hang from the top of the roller, asshown in Fig. 3. The cloth strip X, interposed between the displaysheetsand the roller, permits the several sheets to be readily thrown over theframe and prevents the sheets from being torn. By this means the sheetsdo not become injured by folding or rolling, and a great number ofsheets may be attached to one roller, thus greatly economizing room,-andalso making it much more convenient for the examiner than where he hastohang each sheet separately on a frame.

My invention will be found very useful and convenient for schools, as itis very compact and portable, and is easily managed. While I have in thepresent instance represented my invention as applied to displaying aseries of primary charts, it will be perfectly obvious that anydescription of chart, map, diagram, illustration, or other display sheetmay be adpass up into a hole in the frame A; or one end of the pin 1)may be firmly held in the top of the standard A, the other end enteringa hole in the frame A.

A modification of my invention is shown in Fig. 4, representing asubstitute for the frame A and standard A. In this modification theroller 0 is made hollow and has passing through it the horizontal arm ofthe crane 1, this crane being secured to the strip or bracket 2, whichis to be secured to the wall; or the crane may secured directly to thewall. In this instance the crane is moved from side to side to displaythe different faces of the sheets i sheets, substantially as described.

attached to the roller 0.

Another slight modification is shown in Fig. 5, in which the arms Bandroller (J are dispensed with and the display-sheets are to beattached directly to the rail 13, in which event the clothconnecting-strips should be somewhat wider than shown in Fig. 3 topermit the display-sheets to hang smoothly.

What I claim as new and of my invention, and desire to secure by LettersPatent, is-

1. In combination with a series of displaysheets, a frame or support towhich one end of said sheets is attached, said frame being retained onan appropriate support and capable of being turned horizontally thereon,substantially as and for the purposes specified.

2. The roller G, having attached thereto a series of displaysheets, E,and supported by a frame, said frame being retained on an appropriatesupport and capable of being turned horizontally thereon, substantiallyas and for the purposes specified.

3. The standard A, provided at the top with hole b,and frame A,consisting of the horizontal rail B and arms B, the frame being providedwith pin 1) and capable of being turned horizontally on the standard, incombination with the roller 0, having attached thereto at intervalsaround its face a series of display-sheets, E, substantially as and forthe purposes specified.

4; The standard A and frame A, capable of being turned horizontally onthe top of the standard, said frame being further provided with notchesd, in combination with the roller 0, having attached thereto a series ofdisplay- 5. The rail 0, retained on an appropriate support and capableof being turned horizon- I tally on such support, and a series ofdisplaysheets attached to said rail by means ofa connecting-strip, X,substantially as and for the purposes speci lied.- V

1 ALEXANDER DOM.

Vitnesses: a

,- WM. 1*]. Jonas,

J. )VM. STREHLT.

